<section id = "api_layout-setExpectedWidthHeightRatio" data-view = "true" data-view-title = "View.layout.setExpectedWidthHeightRatio(ratio)">
	<header>
		<a class = "nav-back" data-view-rel = ":back"></a>
		<span>View.layout.setExpectedWidthHeightRatio(ratio)</span>
		<a class = "menu"></a>
	</header>
	<div class = "body">
		<div class = "api-name">View.layout.setExpectedWidthHeightRatio(ratio)</div>
		<div class = "api-usage">设置蓝图（亦即，高保真效果图）的宽高比。</div>
		<div class = "api-params"><ol>
			<li>ratio – {Float} 蓝图的宽高比</li>
		</ol></div>
		<div class = "api-returns">{JsonObject} – View.layout对象</div>
	</div>
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</section>